Q. An electron is moving with an initial velocity $V = v_{0} \hat{i}$ and is in a magnetic field $B = B_{0} \hat{j}$ . then it's de Broglie wavelength

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A

remains constant.

25%

B

increases with time.

0%

C

decreases with time.

25%

D

increases and decreases periodically.

50%

Solution:

$λ = \frac{h}{m v} =$ constant